If you need the without shell version / please buy Product ID: 1450129, Standby current: ≤100mA, Attribute: RF frequency domain analysis tool, Computer operating system: winxp / win7 / win10;, Software used on the computer side: NWT4.11.09 version, Sweep dynamic log ratio: > 50dB, Power supply: usb, Sweep step: ≥ 33~68.75mHz/125Hz / 68.75~137.5mHz/250Hz / 137.5~275mHz/500Hz / 275~550mHz/1kHz / 550~1100mHz/2kHz / 1100~2200mHz/4kHz / 2200~4400mHz/8kHz, Sweep speed: ≥800 points / sec, Input detection: ≤10dbm, Sweep bandwidth: 33mHz—4400mHz, Turn on the tracking source output bandwidth 33mhz—3000mhz, Point frequency or sweep output power: ≈0 dBm, Interface: usb, Sweep current: ≤350mA, Background: ≈ -60dBm, Provide software and instructions for use. >>>>>>>Click here to open<<<<<<<. You can create price alert here, copy coupons and view price history. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BG00c906, ADMITAD2212, 2022ACTIESNL, Terence, MVC8SPRING, 8BGwbg2204
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for Spectrum Analyzer USB LTDZ 35-4400M? There we go. The lowest price was: $39.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).